Year	US Dollars adjusted for inflation)
1950	2465
1951	2469
1952	2554
1953	2645
1954	2716
1955	2739
1956	2732
1957	2689
1958	2677
1959	2766
1960	2806
1961	2866
1962	2944
1963	2958
1964	3071
1965	3036
1966	3087
1967	3139
1968	3218
1969	3353
1970	3469
1971	3622
1972	3782
1973	3935
1974	4040
1975	4077
1976	4191
1977	4268
1978	4553
1979	4720
1980	4823
1981	4818
1982	4763
1983	4723
1984	4787
1985	4840
1986	4984
1987	5125
1988	5233
1989	5327
1990	5442
1991	5459
1992	5524
1993	5596
1994	5725
1995	5901
1996	6048
1997	6186
1998	6167
1999	6045
2000	6080
2001	6022
2002	6045
2003	6095